697
FXUS65 KBYZ 132342
AFDBYZ
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BILLINGS MT
542 PM MDT TUE OCT 13 2026
KEY MESSAGES
- LIGHT RAIN AND SNOW SHOWERS OVER THE MOUNTAINS OF SOUTHERN
MONTANA AND NORTHERN WYOMING TODAY.
- SLIGHT CHANCE OF PRECIPITATION IN FAR SOUTHEAST MONTANA AND
NORTHERN WYOMING LATE WEDNESDAY.
- LOW TEMPERATURES NEAR TO BELOW FREEZING CONTINUE THIS WEEK,
COLDEST TONIGHT AND THURSDAY NIGHT.
- WINDY CONDITIONS OVER FAR EASTERN MONTANA THURSDAY.
- CONDITIONS TREND WARMER AND DRIER FRIDAY INTO THE WEEKEND, WITH
PERIODS OF WIND FRIDAY INTO SATURDAY.
UPDATED AVIATION DISCUSSION
DISCUSSION
TODAY THROUGH MONDAY...
SEASONABLY COOL CONDITIONS EXIST TODAY AS TEMPERATURES WARM INTO
THE 40S AND 50S ACROSS THE REGION. WHILE DRY CONDITIONS PREVAIL
FOR MOST, A FEW LIGHT RAIN AND SNOW SHOWERS (SNOW LEVELS AROUND
6,000 TO 8,000 FEET) EXIST OVER FAR SOUTHERN MONTANA AND NORTHERN
WYOMING WITHIN AN AREA OF DIFFLUENCE FROM A LOW PRESSURE SYSTEM TO
THE SOUTH. AS THIS LOW PRESSURE SYSTEM GRADUALLY SHIFTS EAST
THROUGH UTAH AND COLORADO TODAY AND WEDNESDAY, THE ASSOCIATED
SHOWERS WILL GRADUALLY SHIFT EASTWARD AS WELL. BY WEDNESDAY
AFTERNOON AND EVENING, THE CHANCE OF PRECIPITATION IS OVER THE
PLAINS OF FAR SOUTH-EASTERN MONTANA AND NORTH-EASTERN WYOMING
BEFORE A DRY COLD FRONT PASSAGE ENDS THE CHANCE OF PRECIPITATION
ACROSS THE REGION WEDNESDAY NIGHT.
OUTSIDE OF THE PRECIPITATION, FOG IS FORECAST TO DEVELOP OVER
PORTIONS OF THE AREA TONIGHT. WITH THIS, LOCALLY DENSE FOG IS
POSSIBLE AT TIMES. MAKE SURE TO USE CAUTION IF TRAVELING TONIGHT
OR EARLY WEDNESDAY MORNING AS VISIBILITY COULD CHANGE RAPIDLY.
AFTER A WARMER DAY ON WEDNESDAY (TEMPERATURES BACK NEAR NORMAL),
THE PREVIOUSLY MENTIONED COLD FRONT WILL BRING SLIGHTLY COOLER
TEMPERATURES BACK TO THE AREA ON THURSDAY. THIS FRONT WILL ALSO
INCREASE WINDS, ESPECIALLY OVER THE PLAINS OF FAR EASTERN MONTANA
WHERE PEAK WIND GUSTS ARE FORECAST IN THE 40S TO 50 MPH ON
THURSDAY. ACROSS THE REST OF THE AREA, GUSTS IN THE TEENS TO 20S
MPH ARE FORECAST.
FRIDAY INTO THE WEEKEND, A RIDGE OF HIGH PRESSURE IS EXPECTED TO
BUILD OVER THE REGION. THIS WILL ALLOW TEMPERATURES TO CLIMB BACK
ABOVE NORMAL INTO THE 60S AND 70S, WARMEST SATURDAY. ALONG WITH
THE WARMER TEMPERATURES, WINDY CONDITIONS ARE FORECAST AT TIMES.
THE STRONGEST WINDS ARE EXPECTED AROUND LIVINGSTON TO NYE LATE
FRIDAY INTO SATURDAY AHEAD OF A DRY COLD FRONT PASSAGE LATE
SATURDAY NIGHT INTO SUNDAY MORNING.
MONDAY LOOKS TO BE MAINLY DRY AND WARM, BUT ENSEMBLES SUGGEST
ANOTHER WEATHER SYSTEM IS POSSIBLE BY TUESDAY OR WEDNESDAY NEXT
WEEK. LA
AVIATION
PATCHY FOG MAY DEVELOP OVER SOUTHERN MONTANA AND NORTHERN WYOMING
TONIGHT THROUGH WEDNESDAY MORNING. TERMINALS MOST LIKELY TO
EXPERIENCE IMPACTS ARE KMLS, KBHK, AND KSHR. OTHERWISE LOW
CEILINGS WILL PERSIST OVER AND NEAR THE MOUNTAINS, PRODUCING
OBSCURATIONS THROUGH THE PERIOD. MATOS
PRELIMINARY POINT TEMP/POPS
WED THU FRI SAT SUN MON TUE
-----------------------------------------------------------
BIL 031/062 037/059 036/069 047/073 043/065 042/071 044/064
00/U 00/U 00/U 00/U 00/U 00/U 13/W
LVM 024/063 030/062 032/073 038/072 037/067 038/070 039/060
00/U 00/U 00/U 00/N 00/U 00/U 35/W
HDN 029/064 033/061 031/072 036/076 040/068 037/074 039/067
00/U 00/U 00/U 00/U 00/U 00/U 22/W
MLS 030/061 038/056 030/069 038/073 043/064 040/071 045/068
00/B 00/U 00/U 00/U 00/U 00/U 01/U
4BQ 033/062 040/057 030/071 041/075 044/066 042/074 047/071
01/B 10/U 00/U 00/U 00/U 00/U 01/U
BHK 028/063 034/056 024/068 038/076 040/066 037/073 042/072
00/B 00/N 00/U 00/U 00/U 00/U 00/U
SHR 029/061 035/060 028/072 036/076 039/068 036/074 040/069
32/W 20/U 00/U 00/U 00/U 00/U 02/W
BYZ WATCHES/WARNINGS/ADVISORIES
MT...NONE.
WY...NONE.
WEATHER.GOV/BILLINGS
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